11Pcs Precision R8 Collet 3mm - 20mm Assortment Kit. Drawbar Thread: M12 x 1.75mm(Pitch). 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm.Made of highest grade steel available. Precision ground to close tolerance. Please check our store for other sizes. The item "11Pcs Precision R8 Collet Set NEW 3mm 20mm Assortment Kit Drawbar Thread M12" is in sale since Thursday, June 11, 2020. This item is in the category "Home & Garden\Tools & Workshop Equipment\Other Tools & Workshop Equipment". The seller is "gavanstore" and is located in Shanghai. This item can be shipped worldwide.