Features: 5 standard for your option: shaft length: 14.5mm & thread height: 6.7mm, shaft length: 17mm & thread height: 9.5mm, shaft length: 20mm & thread height: 11.7mm, shaft length: 23mm & thread height: 14.6mm, shaft length: 31mm & thread height: 24.6mm. Suitable for repairing or making clocks, serving as good replacements for large and thick clock frames. When you install them, please keep the hour hand and minutes hand parallel-; And please do not use too much pressure to avoid bending them. Applicable to cross-stitch, three-dimensional embroidery, craft clock, frameless draw clock. Made of quality quartz & plastics, durable-, sturdy- & long time- service. Specifications: Material: quartz+plastic- Style 1: Total shaft length 14.5mm, thread height 6.7mm, suitable for passing through 1-4mm thick clock panels Style 2: Total shaft length 17mm, thread height 9.5mm, suitable for passing through 3-6mm thick clock panels Style 3: Total shaft length 20mm, thread height 11.7mm, suitable for passing through 5-8mm thick clock panels Style 4: Total shaft length 23mm, thread height 14.6mm, suitable for passing through 9-13mm thick clock panels Style 5: Total shaft length 31mm, thread height 24.6mm, suitable for passing through 16-21mm thick clock panels Power supply-: 1xAA battery Note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Wall Clock