They cost about $8 and it was obvious when I used them. The stop color is on the side of the drill. It slides as hard as possible over the grub screw. It must be used with extreme care not to drill too deep. I recommend trying another option.
Bit set DeWALT DT7969-QZ, 32 pcs.
39 Review
Cordless drill driver BOSCH GSR 120-LI (06019G8020/06019G8000)
54 Review
𧱠Bosch 2607017164 Piece Setter Masonry: Advanced Tools for Precision Masonry Work
20 Review
Tool set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
45 Review