Kneepad Replacement/Model 21 Posted on September 27, 2016April 14, 2021 by admin $18.00 Kneepad Replacement/Model 21 quantity Add to cart SKU: byparts Category: Parts Description Description Kneepad Replacement Model 21 Related products Replacement Plate with Pins (for Models 16 & 21 Stretcher) $59.00 Add to cart