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Description
The standard ER collet is the most widely used clamping system in the world.
Made from Alloy spring steel and fully hardened these ER collets are ideal for many machining applications including boring, milling, reaming, tapping and grinding. Unless specified differently all of our ER collets feature runout of 0.010 micron or less. ,ER collet sizes start at ER8 through ER50
ER20 series collets have a capacity of 1mm-14mm. Each ER20 collet has a range of (1 mm). The size indicated on the collet is the largest size it can hold and can be collapsed smaller within its collapse range of (0.9mm). For example, ER20-3mm can grab a round shank from 3mm diameter to 2.1mm diameter
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At ToolBros, we're passionate about precision, performance, and providing the highest quality CNC milling tools and accessories to professionals and enthusiasts alike.
Our Story
Founded by a team of machinists and engineering professionals, ToolBros was born from a simple observation: finding reliable, high-performance CNC tools and accessories online shouldn't be complicated. What started as a small operation has grown into a trusted supplier for workshops, manufacturing facilities, and hobbyists across the country.
Our Mission
We strive to provide exceptional CNC milling tools, cutting implements, and accessories that enhance precision and productivity. Every product in our catalog is carefully selected based on quality, durability, and performance to ensure you get the best results from your CNC projects.
Why Choose ToolBros?
- Expertise: Our team brings decades of combined experience in machining and CNC operations
- Quality Selection: We personally test and verify every product line we carry
- Competitive Pricing: Direct relationships with manufacturers allow us to offer professional-grade tools at fair prices
- Customer Support: Our knowledgeable staff provides technical guidance and personalized recommendaations
- Fast Shipping: Most orders ship within 24 hours from our centralized warehouse
Our Commitment
We understand that your projects demand precision and reliability. That's why we stand behind every product we sell with our satisfaction guarantee. If a tool doesn't perform to your expectations, we'll make it right.
At ToolBros, we're not just selling tools—we're supporting your craft, your business, and your passion for precision machining.
Join the ToolBros community today and experience the difference that quality tools and exceptional service can make for your CNC projects.
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