I bought a Park Tool HMR-8 hammer to use while working on my mountain bike. The hammer is really well made, no less than what you would expect from Park Tool. The 8 oz (225 g) head is forged steel with a machined face (1 inch [25 mm] diameter). On the other side of the head is a replaceable composite plastic tip (1.25" [32mm] diameter) (P/N 293-8) that has not damaged the finish of my cranks when I've used them. The hammer feels good in the hand and is well balanced with a 12" (30.5cm) fiberglass shaft and soft, grippy rubber handle. The HMR-8 isn't a heavyweight, but it's perfect for adding to your toolbox. Obviously is it too big and heavy to take out on the road This would be a nice addition to a home bike shop to use on stubborn parts like cranks, some bottom brackets and other parts that need a little persuasion. If you are looking for a lighter weight hammer for your bike tools and want a hammer that will last a lifetime, the Park Tool HMR-8 is definitely a great option.Thank you for taking the time to read my review.I hope it was helpful to you.