Hydraulic and Mechanical Couplers for excavators. SmartLoc, PowerLatch and WR style Quick Hitch Couplers let you quickly exchange buckets and other attachments without needing to spend hours driving pins out. Couplers for all sizes of excavators fitting various styles and sizes of pins and stick configurations. Unsure which product is best for you or have questions about a product? Contact one of our product experts at 844.311.7538 - chat with us - use our product finder at the top of this page - or email us at email@example.com.