90° Aluminum Corner Clamps for Woodworking – 4-Piece Kit

90° Aluminum Alloy Corner Clamps – Precision Woodworking Set

Take your woodworking and carpentry projects to the next level with this 4-piece 90-degree aluminum alloy corner clamp set. Engineered for accuracy and built to last, these right-angle positioning clamps are ideal for assembling drawers, cabinets, picture frames, boxes, shelving, and furniture — delivering perfectly square joints every single time.

Why You'll Love These Corner Clamps

• Eliminate Misalignment: Each clamp is precision-machined to hold a true 90° angle, preventing joint shift during gluing, nailing, or screwing — so your work comes out square on the first try.
• Rust-Proof Aluminum Alloy Build: Constructed from high-density aluminum alloy, these clamps are lightweight yet incredibly durable. The rust-proof material ensures consistent performance project after project without wear or corrosion.
• Generous 3.5-Inch Clamping Range: Accommodates a wide variety of material thicknesses — both inside and outside workpieces — making these clamps adaptable for virtually any carpentry or DIY setup.
• No-Slip Joint Security: The fixed block system and thermoplastic star knobs grip firmly to prevent slippage at corner joints, so you can work confidently without constant re-adjustments.
• Complete Kit Included: Everything you need comes organized in a compact storage box — ready for your workshop, job site, or garage.

Full Specifications

• Material: Aluminum Alloy
• Corner Clip Size: 14 × 14 cm / 5.5 × 5.5 inches
• Extension Bolt Size: 13 cm / 5.12 inches
• Metal Spacer Size: 1.65 cm / 0.65 inches
• Star Knob Size: 3.8 cm / 1.49 inches
• Fixed Block Size: 2.7 × 1.7 × 4 cm / 0.98 × 0.66 × 1.58 inches
• Total Weight: 3.53 lbs (1,600 g)
• Country of Origin: Made in China

What's in the Box

• 4 × 5.5-inch Corner Clamps
• 8 × Fixed Blocks
• 8 × 5.12-inch Extension Bolts
• 10 × Metal Spacers
• 8 × Thermoplastic Star Knobs
• 1 × Compact Storage Box

Perfect For

Whether you're a seasoned carpenter, weekend DIY enthusiast, or a hobbyist building furniture, frames, cabinets, or mailboxes, these corner clamps are a must-have addition to your toolbox. They also make a thoughtful and practical gift for woodworking lovers.

For general woodworking safety tips and best practices, visit the OSHA Woodworking Safety Resource.

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Note: Slight color variation may occur due to lighting and photography angles. Minor dimensional tolerances are within standard manufacturing specifications.

Frequently Asked Questions

Q: What materials can these 90-degree corner clamps work with?

A: These aluminum alloy corner clamps are designed for use with wood, MDF, plywood, and similar materials commonly used in woodworking, carpentry, and DIY projects. Their 3.5-inch clamping range accommodates a wide variety of thicknesses.

Q: How many corner clamps come in the set?

A: The set includes 4 corner clamps along with 8 fixed blocks, 8 extension bolts, 10 metal spacers, 8 thermoplastic star knobs, and a compact storage box — everything you need to tackle multiple corners simultaneously.

Q: Are these corner clamps suitable for beginners?

A: Absolutely. The intuitive star-knob tightening system and self-aligning fixed blocks make setup quick and straightforward, even for those new to woodworking. They help ensure accurate 90° joints without advanced skills or extra measuring tools.

Q: Will these clamps rust over time?

A: No. The high-density aluminum alloy construction is inherently rust-proof, making these clamps a durable long-term addition to any workshop — even in humid environments.