Look no further. Great product quality, that's solidly built. Best of all, its very affordable price. Buy today.<br />Head diameter: 26mm <br />depth: 20mm <br />Material: aluminum alloy <br />With 1 key. <br />Note: keys can be taken out whenever. <br />1 x Lock<br />1 x Key<br /><img src="//agdetail.image-gmkt.com/m430/894/495/558495894/img/agdetail.image-gmkt.com/894/495/558495894/img/img6.eachbuyer.com/x13/p19/ba015_1.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/894/495/558495894/img/agdetail.image-gmkt.com/894/495/558495894/img/img6.eachbuyer.com/x13/p19/ba015_2.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/894/495/558495894/img/agdetail.image-gmkt.com/894/495/558495894/img/img6.eachbuyer.com/x13/p19/ba015_3.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/894/495/558495894/img/agdetail.image-gmkt.com/894/495/558495894/img/img6.eachbuyer.com/x13/p19/ba015_4.jpg" />