The Perfect Companions To Our Trolleys. Carved From Dense Appalachian Hardwood And Sealed With An Environmentally Safe Preservative. The Striking Surface Is Crafted From Ultra High Molecular Weight Polyethylene, Noted For It&';s Exceptional Wear Resistance. Steel Hardware And Two Galvanized Eye Bolts Round Out The Package. Mounts Around Cable And Attaches To A Static Point With A Bungee Cord (Not Included). This Brake Block Is Sold As A Component To An Integrated Braking System. It Is Designed To Be Used As Part Of A Gravity Based Brake System And Be Attached To A Shock Cord. It Should Never Be Used Alone Or Without A Backup Emergency Brake In The Event Of A Failure. There Are Two Eyebolts Installed In This Block. One Should Be Rigged To Take The Impact From The Rider. The Second Should Be Connected To The First With A Slack Tether.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }