Simply insert the rear end of these drill bits and let the oval head engage with the slot, lock the chuck and it will never slip in any drilling actions. Bottom of chuck features an oval shaped limiting slot that designed to use with our customized oval head drill bits, just like sliding a key into keyhole.
This product would be ideal for professionals working in construction sites, farmers, or anyone requiring a high-performance power tool that offers durability, lightweight portability, and precise control.
