RAM Locking Knob with 1/4-20 Brass Hole for B Size Arms - RAM-KNOB3LU

The RAM locking knob, includes a brass 1/4"-20 thread, for 1" (B size) socket arms; this allowing you to disengage the screwing of the knob. Once you have set your mount in the location you need, you can lock it in place and feel safe that your mounted device will stay right where you left it.

Material: 
Powder Coated Marine Grade Aluminum 

Ball Size: 
1" Rubber Ball "B" Size 

Note: 
The "U" in the part number reflects product packaged in poly bag. 

Weight:
0.3 lbs.

RAM Locking Knob with 1/4"-20 Brass Hole for B Size Arms

Compatible Arms and Mounts

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RAM Long Length Double Socket Arm For B Size 1" Balls - RAM-B-201U-C

RAM 18" Long Rigid Aluminum Rod & (2 QTY) Single Socket Arms For 1" Balls - RAP-B-200-1-18U

RAM Composite Double Socket Arm For 1" Balls - RAP-B-201U

RAM® X-Grip® Cell Phone Cradle With Double Socket Arm - RAP-HOL-UN7B-201U

RAM 1" Ball Medium Length Double Socket Arm With 2.5" Round Base That Contains The AMPs Hole Pattern - RAM-B-103U

RAM Medium Double Socket Arm, Long Double Socket Arm & Double Ball Adapter For B Size 1" Balls - RAM-B-201-201U-C

RAM Short Double Socket Arm For B Size 1" Balls - RAM-B-201U-A

RAM Long Length Double Socket Arm With Retention Arm For B Size 1" Balls - RAM-B-201U-C-ALA1

RAM 18" Long Extension Pole With (2 Qty) 1" Single Open Sockets - RAP-BB-201-18U