The Rock Slide Moulded Clear Glass Guitar Slide Medium

The Rock Slide Medium Clear Glass (GRS-MC) | Haggerty’s Music

This brand new Medium Clear Glass Slide can be seen in our Rapid City, SD showroom.

Buy risk free with our 14 day - full refund, less shipping, return policy. Check out our shop policies for more details.

Precision performance meets crystal-clear tone. The Rock Slide® GRS-MC is a premium, hand-moulded tool that redefines the glass slide experience. Individually crafted in the USA by master lampworkers, the Moulded Glass Series brings the patented ergonomic features of the original brass design to a faster, lighter material.

Now available at Haggerty’s Music, this Medium (M) model is specifically engineered for players with a ring size of 8–10.5. It offers the perfect balance of speed for electric guitar and enough mass to make your acoustic resonator ring out.

The Rock Slide Difference: Engineered for Comfort

Traditional "bottle-style" glass slides are often straight tubes that feel cumbersome and unstable. The GRS-MC solves these issues with a design that is "carved" to fit the human hand.

• Tapered Interior (Zero Wobble): Most slides are loose at the fingertip, forcing you to cramp your finger to keep them steady. The Rock Slide features a tapered interior for a snug, secure fit along the entire finger, providing immediate control and stability.
• Massive Sustain with Thicker Walls: Thanks to the internal taper, these slides have significantly thicker walls at the tip compared to standard glass. This extra mass acts like a "gain knob," providing the sustain needed to "light up" an acoustic guitar while remaining fast on an electric.
• Patented Knuckle Cutaway: A unique notch at the base allows you to bend your finger naturally. This ensures you maintain the mobility needed for fretting chords and complex licks without the slide pinching or restricting your movement.
• Integrated Finger Rest: The flat surface on the side provides a stable spot for your neighboring finger, giving you the leverage and precision required for expressive vibrato and targeted note placement.
• Hand-Moulded USA Quality: Every GRS-MC is individually hand-crafted for a mirror-smooth, frictionless playing surface, ensuring noise-free glides across your strings.

Shop at Haggerty’s Music

Since 1963, Haggerty’s Music has been the premier destination for musicians in the Black Hills. Visit our iconic showroom in Rapid City on West Main St to feel the ergonomic difference of The Rock Slide in person. Our expert team is here to help you find the perfect size and material to match your signature sound.

Product Specifications

• Model: GRS-MC (Medium)
• Material: Hand-Moulded Clear Glass (USA)
• Dimensions: 19.5mm x 60mm
• Recommended Ring Size: 8–10.5
• Series: Moulded Glass Series
• Key Features: Tapered Interior, Knuckle Cutaway, Integrated Finger Rest