HSS M2 Grade Precision Expandable Reamers DIY Finishing Hand Tool (H-4 (12.0-13.5 MM))

• Premium HSS M2 Grade Blades: Manufactured with industrial-grade High-Speed Steel (HSS) M2 grade blades, this reamer is engineered for superior hardness and heat resistance. This high-performance material ensures the tool retains its sharpness and dimensional accuracy over long-term professional use.
• 12.0 mm – 13.5 mm Adjustable Range (Size H4): Achieve any custom hole size within the 12.0 mm to 13.5 mm span with this single precision tool. This versatility provides a cost-effective solution, eliminating the need to invest in a vast inventory of individual fixed-size reamers.
• Precision Dual-Nut Adjustment: Features high-accuracy restraining nuts at both ends. By loosening one nut and tightening the other, you can expand or contract the blades with surgical precision, guaranteeing perfect tolerances and a custom fit for every application.
• Compact Industrial Dimensions: With an Overall Length (OAL) of 142 mm and 41.2 mm cutting blades, the H4 model is designed to provide maximum stability and tactile control. It is perfectly sized for the demands of precision bores and automotive repairs.
• Professional Finishing & Repair Tool: An essential asset for metalworking, automotive maintenance, and precision machining. It is the dependable choice for resizing worn bushings and providing a flawless final internal finish to any bore.
• Smooth & Chatter-Free Operation: The precision-ground finish and multi-blade geometry work together to minimize vibration (chatter). This results in an exceptionally clean, mirror-like smooth finish that meets professional engineering standards.
• Durable Metal Ground Finish: Built to ASSORTS quality standards, this tool features a rust-resistant, precision-ground finish for long-lasting durability. It is the ultimate solution for finishing "odd-sized" holes where standard drill bits simply cannot provide the required accuracy.

Dispatch Time: 1–2 business days
International Delivery: 5–12 business days (location-wise)
Tracking: End-to-end international tracking available
Packaging: Shockproof & secure export packaging
Customs/Duties: May apply based on destination country
Carrier: DHL / FedEx / UPS (depending on region)

Warranty: 6–12 months (manufacturing defects only)
Returns: Accepted for defective, damaged, or incorrect items
Return Window: 7 days from delivery
Replacement: Free replacement for eligible claims
Process: Email support with product video/photos
Note: Used/damaged by customer items not returnable

Read the user manual before first use

Wear safety gloves & eye protection when required

Keep away from children

Do not overload or misuse the product

Store in a dry, moisture-free environment

Clean tools after use to maintain performance