Style 1. Parallel splice conductor area shown is total of two (or more) conductors to be connected parallel. Ideal for inline joints between uneven sized conductor - vinyl insulation.
Style 2. Centre dimple to ensure correct conductor positions - vinyl insulation.
Style 3. Supergrip butt splice with translucent insulation (to ensure correct conductor insertion) and depressed centre to enable use in appropriate ratchet crimp tool without removal of stopper.