Quick-Lok mounting blocks are screwed onto the protective capSetQuick-Lok® Cap Adaptor Kithttp://s7d5.scene7.com/is/image/Staples/s0552905_sc7?$std$http://s7d5.scene7.com/is/image/Staples/s0552905_sc7?$thb$http://s7d5.scene7.com/is/image/Staples/s0552905/Quick-Lok-Cap-Adaptor-Kit/product_777868Quick-Lok® Cap Adaptor Kit0.00