Why buy Extra Grip Resin Wall Ties from us? Because we are specialists in wall tie manufacturing and have been making our own since 1990! If you have any questions about these ties, please get in touch. Available in a variety of sizes and quantities. Gel Time Cure Time Common Brick – 11mm hole 1.95KN 2.75KN Stock Brick – 11mm hole 2.25KN 3.45KN Thermalite Block 1.75KN 2.00KN 20N Concrete 2.10KN 2.85KN 30N Concrete 2.45KN 3.75KN [/su_box]