The PS-9650-C0 (Previous part number PT-9650-C0) is a great option to replace or upgrade the saddle on your acoustic guitar that has an under saddle pickup.  It uses Graph Tech patented Microbalance™ technology which allows you to fine tune he output for each string.  It is compensated to help improve the playability of your guitar and has a 16" radius.

Black TUSQ XL is engineered from the same material as TUSQ and is impregnated with PTFE which is five times more slippery than graphite.  It has all the tonal benefits of TUSQ, bringing out the hidden harmonics of your guitar all while drastically improving tuning performance.  

Black TUSQ XL is consistent from piece to piece, and within each piece, to offer you harmonically rich tones without the problems associated with natural materials.  

Length-Width-Height 
inches 2.806" -  0.126" -  0.331"  
inches 2 13/32" - 1/8" - 11/32"
millimeters 71.27mm - 3.20mm - 8.41mm    

Note: All Graph Tech nuts and saddles are slightly long and wide to ensure extra room to achieve a perfect fit for your guitar. This extra material can easily be removed with fine grit sandpaper.