HYDRAULICIRCUIT TECHNOLOGY, Inc HCT is source for high quality, durable, and easy to install EXCAVATOR and BACKHOE hydraulic kits. We provide HYDRAULIC KITS to run Hammers, Shears, Thumbs, Grapples, Rotators, Mowers and Brush Cutters. PLUS ADD ON PRODUCTS: Front Window Guards Universal Pattern Changer Kit Breaker Auto Lube Systems. Most kit designs are based on actual in house installations. Our engineers, Earthmoving Machinery, Road Construction Machines ...