The Lee Precision Double Cavity Mold #92263 (model NLG358-158-RF) is an aluminum bullet mold designed specifically for powder coating enthusiasts. Designation: NLG358-158-RF (No Lube Groove, .358 Diameter, 158 Grain, Round Flat Nose). Bullet Diameter: .358 inches. Bullet Weight: 158 Grains. Bullet Shape: Round Nose with a Flat Point (RF), featuring a flat base. Bullet Length: 0.627 inches. Compatible Calibers: Optimally suited for .38 Special and .357 Magnum cartridges Features : Handles Included: Lee includes hardwood handles and a hard anodized sprue plate with every double-cavity mold. Aluminum Benefits: Aluminum blocks heat up and cool down significantly faster than iron or steel, reducing block-weight and caster fatigue. Powder Coat Ready: Eliminating traditional lube grooves creates a smoother bullet with more bearing surface, perfectly shaped to tumble and bake with polymer powder coatings