Description:1. Material: high speed steel 42412. Weight: titanium-plated plastic bag: approx. 136G; white diamond plastic bag: approx. 134G; titanium-plated box: 2. About 445G; white diamond box: approx. 445G3. Applicable: suitable for workpieces with hardness below 25HRC, such as carbon steel, thin iron plate, insulation board, PVC board, wood board, etc.3. Note: the operating room needs to cool the chamfering device while operating (can be filled with water, add cutting oil, blow compressed air), otherwise it will easily burn the drill bit when it reaches a certain temperature.4. This chamfering device needs to be operated on the bench drill. It is easy to shake on the hand drill and affect the chamfering effect.5. Packing: contains 20.5 mm × 1, 16.5 mm 1, 12.4 mm × 1, 10.4 mm × 1, 8.3 mm 1, 6.3 mm × 1, optional OPP bag and iron box packaging.Specification: Package Weight One Package Weight 0.45kgs / 1.00lb One Package Size 12cm * 10cm * 8cm / 4.72inch * 3.94inch * 3.15inch Qty per Carton 66 Carton Weight 30.00kgs / 66.14lb Carton Size 48cm * 40cm * 32cm / 18.9inch * 15.75inch * 12.6inch Loading Container 20GP: 434 cartons * 66 pcs = 28644 pcs 40HQ: 1007 cartons * 66 pcs = 66462 pcs