
Shape
Shape RODSUP4 Rod Bloc 15mm LWS Accessory Mount
A CNC-machined aluminum rod block that clamps to 15mm LWS rods and adds both 1/4-20 and 3/8-16 threaded mounting points to your rig
View price on Amazon
Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.
Notice a mistake? Let Us Know
Overview
Key Features
For 15mm LWS Rods
Single 1/4"-20 Threaded Hole
Single 3/8"-16 Threaded Hole
CNC Machined Aircraft Grade Aluminum
Specifications
Brand
SHAPE
Manufacturer
SHAPE WLB
Rod Compatibility
15mm LWS rods
Threaded Hole 1
Single 1/4-20
Threaded Hole 2
Single 3/8-16
Material
CNC-machined aircraft-grade aluminum
Pros & Cons
👍 Pros
- Machined from aircraft-grade aluminum, so the block is light on a rig without feeling flimsy when you torque down accessories
- Pairs a 1/4-20 and a 3/8-16 threaded hole in one block, covering the two most common accessory thread sizes on set
- Designed for the 15mm LWS rod standard, which is the dominant cage-and-rod format for mirrorless and small cinema cameras
- Dedicated rod block is simpler and lower-profile than adapting a rosette arm or multi-joint mount for a single accessory
👎 Cons
- Only compatible with 15mm LWS rods, so 19mm studio rod rigs need a different block or a step-up adapter
- Single hole per thread size limits how many accessories you can anchor to one block simultaneously
- No built-in anti-rotation or safety pin — operators relying on heavy accessories may want a redundant secondary mount
- Aluminum construction can mar or scratch rods if the clamping screw is overtightened during a fast rig change
Frequently Asked Questions
Will this block fit 19mm studio rods?
No. The Rod Bloc is specified for 15mm LWS rods only. A 19mm studio rod system needs a different block or a 19mm-to-15mm rod adapter for compatibility.
Can I mount both a 1/4-20 and a 3/8-16 accessory at the same time?
Yes. The block has one 1/4-20 and one 3/8-16 threaded hole, so two accessories with different thread standards can be mounted to the same block simultaneously.
Is the aluminum construction strong enough for monitor arms or EVFs?
The block is CNC-machined from aircraft-grade aluminum, which is the standard material for this class of rig accessory. For very heavy loads, supporting the accessory with a second mounting point is best practice.
Does it include anti-rotation pins for locking accessories in place?
The product description lists only the threaded holes — no integrated locating pins are specified. Accessories that need anti-rotation will rely on friction from the threaded fastener and mating surface.
Is this block suitable for gimbal builds where weight matters?
Yes. Aluminum construction keeps the block lightweight, which matters on gimbal and handheld rigs where every gram affects balance and battery life.