24Pcs Deepen Watch Crystal Presser Die Set Aluminum Alloy Watches Repair Parts. Item Type: Watch Dies. Usage: For pressing the watch bottom cover. Concave Shape Press Dies Height: Approx. 20mm / 0.79in. Concave Shape Press Dies Diameter: Approx. 58mm / 2.28in, 56mm / 2.2in, 54mm / 2.13in, 52mm / 2.05in, 50mm / 1.97in, 48mm / 1.89in, 46mm / 1.81in. 44mm / 1.73in, 42mm / 1.65in, 40mm / 1.57in, 38mm / 1.5in, 36mm / 1.42in, 34mm / 1.34in, 32mm / 1.26in. 30mm / 1.18in, 28mm / 1.1in, 26mm / 1.02in, 24mm / 0.94in, 22mm / 0.87in, 20mm / 0.79in. Concave Shape Models: L-58, L-56, L-54, L-52, L-50, L-48, L-46, L-44, L-42, L-40, L-38, L-36, L-34, L-32, L-30, L-28, L-26, L-24, L-22, L-20. Cylinder Shape Press Dies Height: Approx. Cylinder Shape Press Dies Diameter: Approx. 40mm / 1.57in, 28mm / 1.1in, 23mm / 0.91in, 18mm / 0.71in. Widely Use: Applicable to different types of capping machine, wide range of use, suitable for watch repairing. Easy To Use: Simple and easy to operate, it can be done at home, saving you expensive repair costs. 24Pcs x Deepen Watch Crystal Presser Die Set.