![400 Day Fork #4 (10593219279)](http://perrinwatchparts.com/cdn/shop/products/78.364-4-300_300x300.jpg?v=1595351798)
400 Day Fork #4 is a short two prong fork for 400 Day Suspension Units. Total length, from end of block to tip of fork is 12.15mm.
400 Day Fork #4 is a short two prong fork for 400 Day Suspension Units. Total length, from end of block to tip of fork is 12.15mm.