Check the listing for details. Bodee ER Spring Collet Precision TIR 0.000315. Condition: New. Listed at 7.55 USD. 1. Runout tolerance within 8 micron (0.00031") at 4×d position2. Designed for use with cylindrical shank tools, not flats3. The full length of the cutting tool should be placed in the collect4. Made from Alloy spring steel and fully hardened5.Each collet gone through thermal aging process to eliminante grinding residual stress and long cryogenic treatment to imoproce wear resistance SKU BB0105006A BB0105010A BB0105014A BB0106009A BB0106013A BB0106021A BB0106025A BB0106029A Collet Series ER32 ER32 ER32 ER40 ER40 ER40 ER40 ER40 Size (d) 1/4" 3/8" 1/2" 3/8" 1/2" 3/4'' 7/8" 1" Clamping Range 7/32" - 1/4" (0.211" - 0.25") 11/32" - 3/8" (0.304" - 0.375") 15/32" - 1/2" (0.461" - 0.500") 11/32" - 3/8" (0.339" - 0.375") 15/32" - 1/2" (0.461" - 0.500") 47/64'' - 3/4'' （0.73'' - 0.750''） 27/32" - 7/8" (0.836" - 0.875") 31/32" - 1" (0.961" - 1") Diameter（D） 1 - 19/64" (33mm) 1 - 19/64" (33mm) 1-19/64" (33mm) 1-39/64" (41mm) 1-39/64"(41mm) 1 - 39/64'' (41mm) 1-39/64" (41mm) 1-39/64" (41mm) Overall Length (L) 1 - 37/64" (40mm) 1 - 37/64" (40mm) 1-37/64" (40mm) 1-13/16" (46mm) 1- 5/64" (46mm) 1-13/16'' (46mm) 1-13/16" (46mm) 1-13/16" (46mm) Runout ≤ 0.00031" ≤ 0.00031" ≤ 0.00031" ≤ 0.00031" 0.00031" ≤ 0.00031'' ≤ 0.00031" ≤ 0.00031" Shape Round Round Round Round Round Round Round Round Material Type Alloy Steel Alloy Steel Alloy Steel Alloy Steel Alloy Steel Alloy Steel Alloy Steel Alloy Steel Net Weight 0.36 lbs 0.36 lbs 0.29lbs 0.62 lbs 0.66 lbs. 0.53 lbs 0.49 lbs 0.53 lbs Gross Weight 0.38 lbs 0.38 lbs 0.31 lbs 0.64 lbs 0.77 lbs. 0.55 lbs 0.51 lbs 0.55 lbs Meas 2.0 × 1.5 × 1.5 in. 2.0 × 1.5 × 1.5 in. 2.0 × 1.5 × 1.5 in. 1.97 × 1.7 × 1.7 in. 1.97 × 1.7 × 1.7 in. 1.97 × 1.7 × 1.7in. 1.97 × 1.7 × 1.7in. 1.97 × 1.7 × 1.7in.