Long arm length: 8.25″. Short arm length: 2.38″. Just a good American made allen wrench.///brand_for_product_detail=Eklind,close_out=No,companydescription=Eklind – Made in the USA,condition=New,condition_google=new,cost=10.850000,countrymade=Made in the USA,country_flag=no_selection,featured=0,flag=no_selection,identifier_exists=0,instock=in stock,manufacture_country=United States,product_image_size=Default,product_page_type=Default,shopping_ad_bestseller=No,smart_campaign_bestsellers=Rest of Smart Campaign Products,square_product_image=https://square-production.s3.amazonaws.com/files/7c4831f3c5b9c047a2fa44dba4196f8807ffb8e9/original.png,square_updated_at=0,sw_featured=No,sync_update_msg=Modified in Magento by harryepstein on 25/01/2017,url_path=7-8-allen