Replacement SmartLock Plus Buckle Assembly The ProKnee® SmartLock® Plus Quick Release Buckle is a complete replacement buckle assembly designed for ProKnee Knee Pads. Each assembly includes one male buckle, one female buckle, and one locking component to restore the SmartLock Plus fastening system. Comfortable One-Pull Strap Adjustment The ergonomic, oversized buckle is easier to operate with work gloves or tired hands while automatically locking the strap at the desired length with a simple pull. This allows a secure, comfortable fit that stays adjusted throughout the workday. Compatible with Past and Current ProKnee Models The SmartLock Plus Quick Release Buckle fits all ProKnee Knee Pad models, including the Original, Model 07, Model 0714, Model 0714E, and AP16. Models 0714 and 0714E use Buckle Hardware Kit BHK-A, while the Original and Model 07 use Buckle Hardware Kit BHK-B. The AP16 does not require a hardware kit. Durable Resin Construction Manufactured from durable plastic resin, the 1-3/4" wide buckle is built to withstand daily jobsite use while providing reliable operation and quick release when needed.