Specification Brand : ZEZEFUFU BulletPoint1 : Brand new watch case opener set BulletPoint2 : Material: ABS+Metal BulletPoint3 : Can easily adjust to adapt variety of sizes of watch cases (18mm to 55mm) BulletPoint4 : Come with steel 12 Dies /4 sets to meet your different repairing needs BulletPoint5 : Commercial-Grade Replacement - Highly-accurate milling cutter serves as suitable replacement for worn-out bits, comes ready-to-use in protective plastic packaging for immediate installation. CutType : Spiral ExternallyAssignedProductIdentifier : 6926684834202 IncludedComponents : 1 ItemName : 55mm Watch Band Back Case Cover Opener Adjustable Fixer Repair Tool with Dies ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 18 centimeters ItemPackageDimensions_Width : 8 centimeters ItemTypeKeyword : solid-surface-router-bits Manufacturer : ZEZEFUFU Material : Tungsten Carbide ModelNumber : REXVTNS3zvsdhfkqm NumberOfFlutes : 2 NumberOfItems : 1 PartNumber : JUSD048900001 ProductDescription : Specifications: Brand new watch case opener set Material: ABS+Metal Can easily adjust to adapt variety of sizes of watch cases (18mm to 55mm) Come with steel 12 Dies /4 sets to meet your different repairing needs 3 for sloted case 3 for case with hold 3 for polygonal case 3 for oyster case