I have purchsed Sandisk ultra 3.0 pen drive 32 gb varient from snapdeal for Rs.609. It has a brilliant reading speed upto 130 mbps, but write speed is very slow as compared to read. It gives approx. 10-18 mbps speed which is a normal speed for any pen drive these days.
It made up of plastic, but feels good. It has two ends, 1st is a normal USB for computers and second one is for mobiles and tablates as OTG pen drive. It runs very smoothly in my mobile, gives an awesome response. Very nice product.