Compound Tubing Bender

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Part# 12-03353
MFR Model# 153


The Compound Tubing Bender allows you to make precise left, right and offset bends with a simple, hand-held mechanism. The calibrated angle markings indicate 15 degree increments from 0 to 45 degrees for accurate results. The Compound Bender handles 4 popular tubing sizes and comes in a convenient vinyl storage pouch.

Bends 4 diameters: 3/16"(5mm), 1/4"(6mm),5/16"(8mm),3/8"(10mm).
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WARNING: Cancer and Reproductive Harm -


  • Bending copper, brass, thin wall tubing,aluminum, soft wire and rods
  • 180 bends in a single action
  • Bender dial is calibrated in twelve15 increments
  • Bends four different diameter tubes
  • Ergonomically designed handles for greatercomfort
  • Durable die-cast alloy construction
  • Extra-long handle for greater leverage
  • Includes vinyl storage case


Great tool

Jones A Verified Purchase


June 15, 2021

Good tool, but a big too large for 3/16 aluminum line. Cant get small enough radius for that size.

Roger F
August 27, 2020

Small size and works great. Quality item.

Tim C
October 25, 2018

Quality item

Tim C
August 26, 2018

The 3/8 spot is too small for 3/8 tube so it marrs the tube. The 1/4 spot works well. Messing up my fuel lines while bending was exactly what I was hoping to avoid by buying this but here we are with dinged up fuel lines due to this tool. Will attempt a return.

April 20, 2022

Very poor quality- one arm broke off while bending aluminum tubing- I returned it to Spruce- waiting for refund/credit for future purchases.

Dennis M
March 7, 2020


Please note,'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What size of tubing does this compound tubing bender bend?

This bender will bend 4 diameters: 3/16"(5mm), 1/4"(6mm),5/16"(8mm),3/8"(10mm).

Q: What is the tightest radius bend with the p/n 12-03353 bender? Ill be using 3/16 stainless tubing.

This tool allows you to bend the tubing up to 180 degrees. The stainless steel material may be too strong and hard for the tool to be able to bend it. This tool is used for copper, aluminum and other softer material tubing. It does fit 3/16" tubing.