Look no further. Great product quality， that's solidly built. Best of all， its very affordable price. Buy today.<br />Head diameter: 25mm <br />depth: 35mm <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 />1 x Hook piece<br /><img src="http://img6.eachbuyer.com/x13/p19/ba014_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p19/ba014_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p19/ba014_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p19/ba014_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p19/ba014_5.jpg" />