The Platinum Tools 16509C 9" Ergo Crimp Tool is crimp tool technology designed around the user. Crimping is even easier and more comfortable. The straight plate lower jaw assembly eliminates critical structural stress points, common in most competitive tools - it will not break under heavy stress and will last for years to come. Higher performance, reliability and comfort, it's all here. This product comes with an RG174, 187, 188, 316 Mini Coaxial Crimp Die.