1/2 Inch Drive Twist Lock Socket Clip Set (5-Piece) Quantity:1 The adjustment knob is knurled

The adjustment knob is knurled and round to provide grip for making adjustments even when you're wearing gloves or have slippery hands

Part Number: BIT-DWDRSD21/32

Fixture Time: 10-30 Minutes

The keys are made from 8660 nickel chromium molybdenum steel that's heat-treated to 54–58 HRC

Part Number: Assortment Kit #411249 Pieces - Coarse Thread

1/2 Inch Drive Twist Lock Socket Clip Set (5-Piece) Quantity:1 The adjustment knob is knurledExtra socket clips for use with Tekton Socket Rails Patented twist to lock design is simple and secure Turn socket 45 degrees to securely lock socket and reverse to unlock Use the Tekton 1 2 in. Drive Twist Lock Socket Clips to add more sockets and ratchet accessories to the Tekton Socket Rail.