![400 Day Fork #1 (10593218895)](http://perrinwatchparts.com/cdn/shop/products/78.364-1-300_300x300.jpg?v=1595351796)
400 Day Fork #1 is a long one prong fork for 400 Day Suspension Units. Total length, from end of block to tip of fork 12.00mm.
400 Day Fork #1 is a long one prong fork for 400 Day Suspension Units. Total length, from end of block to tip of fork 12.00mm.