2 Pieces quartz clock movement mechanisms non ticking clock mechanism with 8 clock hands sets of diy movement kits replacement How to use: First you should choose the clock hands that you like and the size is appropriate, then insert the hour hand, minute hand, and second hand into the movement in turn, paying attention to the tip of the clock hands pointing to twelve o'clock, and keep the hands parallel, finally adjust the time according to the local time. Size from the center of the hole to the tip: Hour hand length: Approx. 75 mm/ 2.95 inches, 63 mm/ 2.48 inches, 70 mm/ 2.76 inches, 57 mm/ 2.24 inches, 78 mm/ 3.07 inches, 75 mm/ 2.95 inches, 63 mm/ 2.48 inches, 38 mm/ 1.5 inches Minute hand length: Approx. 95 mm/ 3.74 inches, 85 mm/ 3.35 inches, 100 mm/ 3.94 inches, 86 mm/ 3.39 inches, 115 mm/ 4.53 inches, 105 mm/ 4.13 inches, 85 mm/ 3.35 inches, 50 mm/ 1.97 inches Second hand length: Approx. 115 mm/ 4.53 inches, 95 mm/ 3.74 inches, 95 mm/ 3.74 inches, 97 mm/ 3.82 inches, 105 mm/ 4.13 inches, 95 mm/ 3.74 inches, 47 mm/ 1.85 inches Second cap: approx. 7 mm/ 0.28 inch Specifications: Material: ABS and aluminum Power: 1.5 V AA battery not included Package includes: 2 Pieces quartz clock movement mechanisms 2 Sets mini accessories 8 Sets clock hands Note: This product package does not contain batteries.