316 Stainless Steel: Designed to stay rust-free and shipshape for a low maintenance high-polish finish that is a perfect addition to any helm of a boat/ship. ***NOTE: DOES NOT FIT MOST CAR STEERING WHEELS. One Handed Operation: Designed with precision control in mind this knob is a comfortable 1-5/8" wide x 2-3/4" long (end of bolt to end of knob), so you can easily navigate your yacht to dock, and enjoy trouble-free trolling Specific Design: Quickly attaches to steering wheels that are 3/4" diameter (NOT ANY SIZE LARGER) for a fast upgrade and a touch of class. FITS TYPICAL BOATING AND SAILING HELMS. GENERALLY TOO NARROW FOR ORDINARY STEERING WHEELS All Hardware Included: Clamp assembly, lock nut and even the wrench to tighten it so you can be up and running in minutes Salty Reef Marine Hardware Dependability - Trusted by Boaters World Wide and USCG Approved Once you try a Salty Reef Suicide Knob you will never go without it again. It’s 1.5/8" x 2-3/4" inches of solid stainless steel with precision bearings and is perfect for maneuvering your yacht to the dock, and stellar for trolling — much easier than hand-over-hand technique. Comes with everything needed for quick assembly, PLUS the positive locking clamp is easy to install and integrates well with any helm - no slipping, guaranteed. Salty Reef Marine Hardware gives you a full line of AISI stainless steel 316 products that are trusted by boaters world wide and USCG Approved. ***NOTE: DOES NOT FIT MOST CAR STEERING WHEELS.