Set of rubber spacers designed to increase the length of your folding stock . Set consists of 5 spacers , and 2 sets of mounting screws (40 mm, 50 mm). It allows you to lengthen your buttstock by up to 2,5 cm. The spacers are installed between the stock and butt pad. This Set of spacers fits the AK & Saiga Tactical Adjustable Buttstock w/ Pistol Grip (SKU: 04.31.000), Saiga Folding Buttstock (SKU: 04.10.000) and Baikal MP-153, Remington "Spartan" SPR453 Shotgun Folding Buttstock (SKU: 12.01.000) .