Ring insulator with continuous support, black, Kerbl

Ring insulator with continuous support, black, Kerbl — KERBL. Country of origin: Poland. packaging: 25 pcs in a bag / 500 pcs in a carton • screw-in insulator for wood with self-drilling screw - 2x easier screwing, no pre-drilling required (significantly fewer cracks in wood) • embedded bent shank - possibility of screwing into very hard wood, e.g. oak, acacia • shank diameter 5.3 mm • thickened walls for better insulation • larger than standard insulating collar against punctures • rounded edges protecting the conductor • for wire, braid and tape up to 12 mm wide