GearWrench
GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm)
$239
Best Torque Wrenches · head-to-head
GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) vs ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb)
A sourced, side-by-side comparison. ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) is cheaper at $114.99. Every spec and price links to its source.
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ACDelco
ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb)
$114.99Cheaper
Which is better: the GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) or ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb)?
The ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) wins 2 of the 3 specs we compare head to head; the other wins 1. The ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) is the cheaper at $114.99. The ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) both leads on specs and costs less — the straightforward pick.
See GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) on Amazon Check ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) price
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) | ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) |
|---|---|---|
| US price | $239 | $114.99 |
| Brand | GearWrench | ACDelco |
| Released | — | — |
| Drive size (in) | 0.5 | 0.5 |
| Torque min ft (lb) | 25 | 14.8 |
| Torque max ft (lb) | 250 | 147.5 |
| Torque range (nm) | 30-340 Nm | — |
| Accuracy | ±2% CW / ±3% CCW (20-100% of wrench scale) | ±2% CW / ±3% CCW (20-100% of maximum torque) |
| Mechanism | digital/electronic | digital/electronic |
| Overall length (in) | 25.75 | — |
| Ratchet tooth count | 72 | — |
| Calibration certificate | Not included as standard — warranty covers 90-day calibration / 1-year parts; meets ASME B107.28M | Included — ISO 6789 standards compliance with certificate of calibration |
| Weight (lb) | 2.88 | 3.9 |
Sources — GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm): gearwrench.com (verified 2026-08-09). ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb): zoro.com (verified 2026-08-09).
What's the difference between the GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) and ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb)?
Where the two actually differ on the specs we track (5 of 10). Matching specs are omitted.
- Torque min ft (lb): GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) 25 vs ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) 14.8
- Torque max ft (lb): GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) 250 vs ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) 147.5
- Accuracy: GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) ±2% CW / ±3% CCW (20-100% of wrench scale) vs ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) ±2% CW / ±3% CCW (20-100% of maximum torque)
- Calibration certificate: GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) Not included as standard — warranty covers 90-day calibration / 1-year parts; meets ASME B107.28M vs ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) Included — ISO 6789 standards compliance with certificate of calibration
- Weight (lb): GearWrench 85077 1/2 in. Drive Electronic Torque Wrench (25-250 ft-lb / 30-340 Nm) 2.88 vs ACDelco ARM601-4 1/2 in. Digital Torque Wrench (14.8-147.5 ft-lb) 3.9