Features:
– High carbon steel drill bit
– Size :3mm 4mm 5mm 6mm 8mm 10mm 12mm 16mm
– Drill limit ring, clamping device, positioner.
– Suitable for standard and bradpoint drill bits.
– Fixed screw coupling will not damage the drill.
– Actively lock anywhere along the bit.
 

The package includes:
1 bit depth stop drill collar