Skip to main content

Get next-day shipping for $20* -  
See details & shipping cut-off dates

Play Video
10% Off $199+ With Code: winter
Graph Tech Graph Tech

Graph Tech Ratio 6-In-Line Electric Locking Tuning Machine Heads With Staggered Posts Black 6 String

136.8 $136.80
Or
6-Month Special Financing
Limited time Learn more
More ways to pay:
Loyalty Points Icon
Loyalty Points Icon
Earn 1,096 reward points
($10.96 in credit)
Earn 1,096 reward pts.
($10.96 in credit)
Inventory Msg Check Mark Inventory Msg Exclamation In Checkout Promo Inventory Msg Download Icon
In Stock & Ready to Ship
Estimated delivery 5-8 business days
  • Free Shipping
  • Top Rated
  • Top Seller
  • Lowest Price
Chevron Right Icon
Overview

6-in-line electric guitar locking tuners with staggered posts deliver predictable, precise tuning on every string.

Graph Tech Ratio 6-in-line electric guitar locking tuners deliver predictable, precise tuning on every string. Graph Tech balanced the gear ratios to each string to simplify the tuning process. With Ratio 6-in-line tuning machines, a half turn is a semi-tone. Every string reacts the same to any tuning adjustment. The Graph Tech PRL-9721 is a right-handed set of locking Ratio calibrated machine heads for electric guitars that use 6-in-line tuners with staggered posts (eliminates the need for a string tree). It has a two-pin casing that can be used as is, or with Graph Tech’s patented InvisoMatch mounting plates. Four different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.

Features

  • One turn equals one tone
  • Includes 6 machine heads, mounting screws and bushings
  • 4 sets of aluminum mounting plates also included

Order today.

Specs

Ratio 6-In-Line Electric Locking Tuning Machine Heads With Staggered Posts Specifications:

  • Gear ratio: 39:1, 24:1, 20:1, 35:1, 20:1, 12:1
  • Peg holes diameter required: 13/32" (10mm)
  • String post diameter: 0.236" (6mm)
  • String post length to string hole: 0.827" (21mm) - 0.787" (20mm) - 0.748" (19mm)
  • String diameter up to 72 gauge
Q&A

Questions & Answers

Do you have questions about this product?

Shop with a Friend
Free Shipping
  • Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).
  • Orders placed before 3 p.m. ET usually ship the same business day.
Learn More
2-Year Free Warranty on Guitars

Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.

Contact Us for Details
We're Here for You

Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.

Contact Us
Proactive Advisor Support Chat