This product is designed to be used with any of the "B" sized socket arms (see Related Products below). It consists of a 1/4"-20 female threaded security knob and key knob, which replaces the knob on the 1" diameter B size arms and mounts.

The RAP-S-KNOB3U is low profile so it only adds a small amount of additional bulk to your system when compared to the standard knob, but gives you great peace of mind becuase it is tamper resistant and keeps your device safe.

  • Material: High Strength Composite

Note: The "U" in the part number reflects product packaged in poly bag. Mount not included with purchase.

Demonstration Video

Barcode # 793442945762
Brand RAM Mounts
Country Of Manufacture United States
Product Specifications

Custom Bundle: No

Modified Item: No

Non-Domestic Product: No

Warranty: Lifetime

Pin lock

By: on 30 July 2018
Well worth getting great way to lock the holder to my bike


By: on 5 July 2018
Clever piece of equipment, it will stop the staff fiddling.

Lock Down

By: on 28 November 2017
What a great product, no more taking the mount off the bike all the time, confident in leaving it and it still being there when I get back.

Very Helpful

By: on 28 September 2017
Very helpful with my enquiries and a very prompt delivery. would have no hesitation dealing with Hurtle Gear again

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