??Look no further. Great product quality? that's solidly built. Best of all? its very affordable price. Buy today.<br />Head diameter: 18mm <br />Depth: 20mm <br />Material: aluminum alloy <br />With 2 keys. <br />Note: keys can be taken out whenever. <br />1 x Lock<br />2 x Keys<br /><img src="http://img6.eachbuyer.com/x13/p19/ba009_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p19/ba009_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p19/ba009_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p19/ba009_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p19/ba009_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p19/ba009_6.jpg" />