Proto® J4921M Crowfoot Wrench, 21 mm Wrench, 3/8 in Drive, 42.8 mm OAL, Polished Chrome
J4921M
MFG #: J4921M
$37.87
/ BX
Non-Stock Item
- Drive Size: 3/8 in
- Finish/Coating: Polished Chrome
- Manufacturer Name: Stanley Black & Decker
- Material: Steel
- Measurement System: Metric
- Overall Length: 42.8 mm
- Wrench Opening: 21 mm
Proto® Crowfoot Wrench, Measurement System: Metric, 21 mm Wrench Opening, 42.8 mm Overall Length, 3/8 in Drive, Steel, Polished Chrome
- Item Features
- Standards
- Locking hole to help hold crowfoot in place during use
- Use with Proto® locking extensions to help prevent tool loss in awkward locations
- Tight tolerance design to have a snug fit on fasteners
- Open ends feature Proto® anti-slip design
- Patented locking grooves help prevent the end from slipping off the fastener when turning
- The arched surfaces are designed to spread the contact forces over a greater area
- Loads are kept off the corners of the fastener which helps prevent fastener rounding
ASME B107.21