Polycarbonate shelf support for built-in shelving using the 32mm System of line boring. With a 300 lb. shear strength and 500 lb. load capacity, this shelf support is ideal for heavy-duty commercial and institutional applications. Made from strong polycarbonate and available in clear, this shelf support also has a holes to mount a screw for additional security. Use with 3/4" or 1" thick shelving. Available in bags of 100 or 1000.