I would strongly suggest NOT to buy that or any other Sanwa/Airtronics servo... It is extremely expensive for something that isn't all very fast at all & has rather feable amount of torque, especially compared against some of the better servos available like the Ko Propo RSx Response, even when running the KO at just 6.0V (it's rated for 7.4V) it's so much faster than the Sanwa & is capable of more than 200% higher torque strength!

I've no idea what kind of vehicle you own but for a 1/8th nitro buggy/truggy I would caution anyone buying any servo with less than 11-12kg-cm torque & these days with the variety on offer, a figure of 15-17kg-cm is very easily achievable. The KO Response has figures of 14.5/17.6kg-cm(!!!) & speeds of 0.06/0.07s when running at 6.0/7.4V. If you want absolutely stupendous amounts of torque or just wanna show off, check out the RSx Power, 26.3/31.6kg-cm & 0.13/0.11s (6.0/7.4s). Both KO RSx servos are far & away the finest, strongest & one of the fastest servos money can buy & when you take into account the entirely alloy case on the RSx HC models, made in just 2 pieces, bottom case & lid, they really can't be beat.

Of course the only downside (you knew it was coming, there has to be something about them that's not the best of the best, right?) if you can call it a negative aspect is their price - they definitely ain't cheap.

If you want some really awesome torque/speed servos that are definitely not expensive by any means, check out the latest Orion servos - when price/value for money is taken into account, the new Orions simply cannot be improved upon by anything on the market today. Consider 11kg/0.06s for just US$80, 13kg/0.08s also US$80, 12kg/0.05s US$90 & 16kg/0.09s US$90!!! And those are just their high speed servo lineup, they also have another 4 or 5 with torque figures of up to 26kg/0.12s for $90 or 23kg/0.15s for only US$65.90!

Now you see why I strongly suggest not going within 10feet of those wimpy & horrendously overpriced & underspec'd Sanwa/Airtronics servos!

Check out the Orions here: http://www.rcmart.com/catalog/servo-...1099_1030.html & http://www.rcmart.com/catalog/servo-...1099_1029.html For the entire lineup: http://www.rcmart.com/catalog/servo-c-1099.html