800 Pcs Integrated Self-tapping Screws Countersink Kit Socket Head. 4 Pcs Steel Cable Tensioner Wire Tightener Tool Ratcheting Trellis. Included 4 kind of washers, 16 kind of screws and 4 kind of nuts, washers are used with and provide a greater bearing surface to prevent the nut or bolt head tearing through the fastened material.
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