Lee Spline Drive Breech Lock Bushings 3/pk

The Lee Spline Drive Breech Lock Bushings 3-pack (SKU LEE90042) delivers a quick-change die mounting system engineered for reloading press operators who demand speed and precision. These bushings eliminate the need for traditional lock rings, replacing them with a split collar clamp mechanism that locks dies securely with a single turn of the screw. The splined drive surface grips dies firmly while remaining effortless to engage, making die swaps between calibers or cartridge types faster and more reliable than conventional setups.

Each bushing features anodized color-coding that allows shooters to instantly identify and organize dies by cartridge type—a practical detail that eliminates confusion when managing multiple calibers on a single press. The split collar design applies even pressure around the die, preventing binding or slippage during loading cycles. This three-pack configuration covers the typical reloader's core caliber requirements, and each bushing is sized to accommodate standard Lee die assemblies. The lightweight design (2.2 lbs for the set) adds minimal bulk to your reloading bench while delivering maximum functional improvement.

Hand loaders who process ammunition for multiple cartridge types benefit most from this upgrade. Whether you're switching between .223 Rem and 308 Win, or rotating through pistol calibers like 9mm, .40 S&W, and .45 ACP, the breech lock bushings reduce setup time and eliminate the frustration of fumbling with traditional lock rings. Precision reloaders appreciate the consistent die seating these bushings provide—critical for maintaining uniform powder charges and bullet seating depths across production runs. The quick-change system pays dividends on high-volume reloading days when caliber switching becomes frequent.