Dimensions: -1 inch blade suitable -Total Length：about 41cm-Speaker MAX : 25mm-ID: 1 inch-OD: about 35mm-Shield OD: 42mm-Main material: aluminium alloy (including the grip) Two of them can be combined  to be one FOv2 with an extra part(The Full Staff Sleeve )  Purchase the The Full Staff Sleeve here. The pommel can be replace to the FO-1 pommel Purchase the FO-1 pommel here. What’s PreKit   PreKit is a pre-installed hilt we offer to you which has installed blade connecter, chassis connecter and switches in the empty hilt. Once you purchase the pre hilt, just plug our chassis set and you can play it. Neither wiring nor welding is needed. We offer regular chassis which can be used in many sabers like RVS，RVJ，FO and FST ect. Have the pre now and enjoy the fun!   For full installed Neopixel: The new UW Asteria V2.5 soundboard installed,. Fully customizable and all parameter can be defined by users in TF card.  Smooth swing supported  Neopixel RGB Color changing  12 Preset banks and can expend to 32 banks or more 9 blade styles, 7 blade effects and 3 power up effects and 4 trigger effects.  BGM support (100 audio max) Replacable chassis   UltimateWorks V1.09x Update Phase1. Add PreOn stage (po files) 2. Add on-hilt volume setting 3. Add on-hilt color setting 4. Add customized folder rename 5. Add 4.oi 6. Add secondary blade ignition selectable disable function   For full installed Neopixel, you will receive: -  A hilt -  A blade plug -  A wrench -  A USB cable - A user guide   For empty hilt or prekit, your will receive:  - A empty hilt -  A blade plug -  A wrench