Specifications: Compatible Devices: Lathe Material: Alloy Steel Included Components: 1/16inch to 13/16inch (2mm-20mm) Type: ER32 Collet Size: 12 PCS By 16th: 1/8, 3/16″, 7/32″, 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″; 13 PCS By 32nd: 1/16», 3/32», 5/32», 9/32», 11/32», 13/32», 15/32», 17/32», 19/32», 21/32», 23/32», 25/32», 13/16» Length: 19 cm (8 inch) Width: 19 cm (8 inch) Height: 7 cm (3 inch) Gross weight: 4 kg (9 lbs) Color: Silver Quantity: 25 Feature: .