This extension adapter is made of high quality material and durable in use， and it is upgrade part with good performance， aluminum alloy machined wheel nut with integrated O-ring to prevent nut from backing off， which is suitable for 1/8 RC car. It sure be a best choice for RC fans.<br /><img alt="" src="//www.guphotos.com/images/uploads/RM6539BL-3.jpg" style="width: 800px; height: 800px;" /><br /><img alt="" src="//www.guphotos.com/images/uploads/RM6539BL-1.jpg" style="width: 800px; height: 800px;" /><br /><img alt="" src="//www.guphotos.com/images/uploads/RM6539PU-3.jpg" style="width: 800px; height: 800px;" /><br />Features:<br />Easy to install<br />Compact and lightweight<br />Convenient and durable in use<br />Made of good quality aluminium alloy<br />Upgrade design with good performance<br />Precision machined increased strength<br />Suitable for 1/8 RC cars， especially RC crawlers HSP series<br />Included 4pcs 17mm hex hub， 4pcs hex wheel nut， 4pcs wheel barrel nut， 4pcs axle pin<br /><br />Specifications:<br />Model name: N10157<br />Material: Aluminum alloy<br />Color: Silver， blue， black， purple optional<br />Adapter total length: 32mm<br />Extension length: 23mm<br />Hex hub diameter: 17m<br />Inner hole diameter: 8mm<br />Pin size: 14 * 2.5mm<br />Quantity: 1 Set/4Pcs<br />Suitable for 1/8 RC cars， especially RC crawlers HSP series<br />Adapter size: 32 * 17 * 15mm<br />Adapter weight: 8g/pcs<br /><br />Package Information:<br />Package size: 8.5 * 3.5 * 2cm / 3.3 * 1.4 * 0.8in<br />Package weight: 43g / 1.5oz<br /><br />Package List:<br />1 * N10157 17mm Hex Drive Nut 23mm Extension Adapter Pin Set<br><img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-hkyz.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-bODF.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-k0nR.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-fHD4.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-VOYM.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-Ioxn.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-jgtL.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-bN5Y.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-SmiK.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-vtZ9.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/L/RM6539BL/RM6539BL-1-affd-rfaP.jpg" /><br>