Koller KFS20 Mechanical Felling Wedge Koller KFS20s Mechanical Felling Wedge Koller spindle for KFS20 Koller spreader plate for KFS20 Koller spreader plate for KFS20s Articulated Ratchet for use with Koller's Wedge Koller end stop for KFS20 and KFS20s Koller threaded pin M12x10