1. Material: aluminum alloy 2. Weight: about 800g/set 3. Size: about 235x190x55mm/set 4. Purpose: disassembly and assembly of small bearing 5. Mounter specifications (inner diameter/outer diameter): 38/42mm, 35/40mm, 32/36mm, 30/34mm, 23/30mm, 25/27mm, 22/24mm, 20/22 Mm, 38/42 mm, 38/42 mm, 38/42 mm, 38/42 mm, 18/20 mm, 16/18 mm, 15/17 mm, 14/16 mm, 12/14 mm, 10/12 Mm 6. Features: solid material, not easy to deform, good toughness, high hardness, various specifications, simple and easy to use, wide applicability, wear-resistant and durable, surface knurled non-slip design, high friction, and improve work efficiency 7. Contains: 14 installers; 3 metal rods