Flaring Cup Grinding Stone 5x2x5/8-11 Type 11 - For Granite & Concrete

Our review of the Flaring Cup Grinding Stone 5x2x5/8-11 finds it is a focused tool for professionals and serious DIYers who need a durable wheel for hard stone work. The biggest reason to buy is its Silicon Carbide abrasive combined with a deeply anchored wrap-around steel hub, which together deliver aggressive material removal and safer high-RPM use when shaping or smoothing granite, marble, and concrete. This is a single 1 PACK wheel designed for spin-on mounting and machine-balanced performance, so it is built to perform on high-speed grinders where chip removal and hub stability matter.

Key Features

• Size and fit: The Type 11 flaring cup 5x2x5/8-11 fits grinders that accept 5/8-11 arbor threads, making installation straightforward for common high-speed tools.
• Abrasive material: Made with Silicon Carbide, the wheel cuts aggressively into hard stone for fast shaping and surface removal on granite, marble, and concrete.
• Safety-focused hub: The deeply anchored wrap-around steel hub reduces wobble and provides added safety during high-RPM use, improving tool life and operator confidence.
• Machine balanced: High RPM machine balancing minimizes vibration so the cup runs smoother and delivers more consistent results on flat and curved surfaces.
• Single pack convenience: Supplied as a 1 PACK, it is an economical choice for replacing a worn wheel or stocking a specific grit for a job.

Who It's For

This grinding stone is best for masonry pros, stone fabricators, and experienced homeowners tackling granite, marble, or concrete shaping and smoothing. Its Silicon Carbide composition and Type 11 flaring cup profile make it suited to jobs that require aggressive material removal and durable contact with hard surfaces.

It is not aimed at casual users who need a multipurpose or finer finishing wheel; if the project requires very fine polish rather than shaping or rapid grinding, users should choose a different grit or a dedicated polishing pad.

Pros & Cons

Pros

• Aggressive cutting action on hard stone thanks to Silicon Carbide abrasive.
• Deeply anchored wrap-around steel hub enhances safety and reduces wobble at speed.
• Machine balanced for higher RPMs, which helps with consistent results and less vibration.
• Standard 5/8-11 arbor thread allows easy spin-on mounting for many angle grinders.

Cons

• Supplied as a single wheel, so frequent users may need multiple packs to avoid downtime.
• 36 grit is aggressive and not suitable for finishing or polishing tasks without follow-up abrasives.

Specifications

Product type	Flaring cup grinding stone
Size	5 x 2 in (cup)
Arbor thread	5/8-11 spin-on
Grit	36 grit
Abrasive	Silicon Carbide
Pack quantity	1 PACK
Hub	Deeply anchored wrap-around steel hub

Our Verdict

The Flaring Cup Grinding Stone 5x2x5/8-11 is a practical, value-oriented choice for professionals and skilled DIYers who need an aggressive Silicon Carbide wheel for granite, marble, and concrete shaping. Its wrap-around steel hub and machine-balanced construction make it safer and more stable at high RPMs, though users seeking fine finishing will need to follow up with finer abrasives.

Frequently Asked Questions

Will this wheel fit my angle grinder?
It fits grinders that accept a 5/8-11 arbor thread for spin-on mounting; verify your grinder spindle and flange compatibility before purchase.

Is this grit suitable for polishing?
No, 36 grit is aggressive and intended for shaping and heavy material removal; use finer grits or polishing pads for a smooth finish.

Is the hub safe for high speed use?
Yes, the wheel is machine balanced and features a deeply anchored wrap-around steel hub designed to improve stability and safety at high RPMs.