SDS Plus chuck adapter for drill bits. With this SDS plus adapter you can transform your rotary hammer into a drill driver. The kit comes with three parts – a drill bit chuck, an SDS + adapter socket, and a drill bit tightening key. The smallest drill bit the chuck can hold is 1.5mm ~ 0.059inch, and the biggest bit it can hold is 13mm ~ 0.511inch I didn't know that the screw should be screwed-in counterclockwise. Second try – counterclockwise. 310g ~ 10.9oz As you can see, the 14mm (0.55inch) drill bit doesn't fit inside the chuck. The 13mm (0.51inch) drill bit fits perfectly. These are the smallest and the biggest drill bits, that can fit inside the chuck adapter, put side by side. I am using Makita BHR202 rotary hammer tool for this demonstration. My technique of drilling is wrong. You should do it with slower rotation and press harder, in order to save the drill bit from overheating and melting. Even with wrong technique the job is done. This is a 2mm (0.078inch) steel plate..
