NEW! 37-155 Diamond Twist Drill Set

20-piece high speed twist drill bits #61 - #80. Straight shanks, high quality steel, diamond coated in a 5-in. x 2-3/8-in. plastic case. Drill stone, ceramics, tile, glass, and hard metals. Use for jewelry, bead making and other crafts.
Any of these twist drill sizes can be used in the following Zona hand drills: 37-140 Swivel Head Pin Vise, 37-145 Double Ended Pin Vise.
#61-#78 fit Zona Tool Holders: 37-120 and 37-130. #70-#80 fit Zona 37-160 Spiral Hand Drill.
#61-#68 fit Zona 37-170 Small Pin Vise. They may also be used with other hand drills that hold wire gauge twist drills or rotary tools such as Foredom®, Dremel®, etc. with micro chuck.
Click on the yellow chart at left for wire gauge dimensions in inches and millimeters.