Fangrui Product Details There Are Four Sizes Of Brass 4485 Collet For You To Choose: 1/8inch, 3/32inch, 1/16inch, 1/32inch. This Material Is Soft And Easy To Wear And Tear, So We Use A Better Quality Brass Material. For Plastic Nuts, They Will Break During Use, And The All-metal Material Solves This Quality Problem Very Well. Compatible With For All Dremel Rotary Tools And Dremel Flex Shaft. But Except Discontinued Models 1, 2, And Series 1 Or Earlier Of Discontinued Models 260, 270 And 280. This Brass Collet Provides A Big Improvement In Precision And Holds These Tiny Bits Far More Securely And In Better Alignment With The Rotation Of The Tool, Under High-speed Rotation, It Not Only Maintains Stability But Also Improves Work Efficiency. Material:brass + Metal Colour:gold+silver Package Contents: 8 X Brass 4485 Collets (1/8inch X 2, 3/32inch X 2, 1/16inch X 2, 1/32inch X 2) 2 X Metal Collet Nuts Only The Above Package Content, Other Products Are Not Included. Note: Light Shooting And Different Display